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Society, culture, cultures, civilization and civilizations
Copper as an antimicrobial agent
Scientists have created a new recyclable metal foam only 10 times heavier than air that can filter out tiny particulates, including droplets and aerosols containing the coronavirus, exhibiting near 100% filtration efficiency, and is just as breathable as filters in current N95 masks : science
New catalyst efficiently turns carbon dioxide into useful fuels and chemicals | Brown University
Climate change and carbon